Required Port 443 For Veeam Backup & Replication Is Occupied By Another Application Link [2026]
Visit the Veeam R&D Forums or contact Veeam Support with the output of veeam_backup_service.log and the results of your netstat analysis.
Open services.msc , locate the offending service (like World Wide Web Publishing Service or VMware Host Agent ), right-click it, and select Stop . Change its Startup Type to Manual or Disabled if it is no longer required on this machine. Strategy 2: Reconfigure the Conflicting Application
How to Fix: Required Port 443 for Veeam Backup & Replication is Occupied by Another Application
Open the , search for cmd , right-click it, and select Run as administrator .
Locate the conflicting service (e.g., for IIS). Right-click the service and select Properties . Change the Startup type to Manual or Disabled . Click Stop , then click OK . Strategy 2: Reconfiguring the Conflicting Application Visit the Veeam R&D Forums or contact Veeam
The first step is to find out which process is "squatting" on port 443.
Go to , locate the specified HTTPS port, and shift it from 443 to a different number (e.g., 4443 ).
Before making changes, you must find out exactly which application or process has hijacked port 443. Method A: Using Windows Command Prompt (Fastest)
The ability to change Veeam's port depends heavily on the version you are using. Strategy 2: Reconfigure the Conflicting Application How to
Run as Administrator in PowerShell or CMD:
In many cases, port 443 is hardcoded in the installer, meaning you cannot simply choose a different port during the setup process. Step 1: Identify the Conflicting Application
. If another application is already using this port, the VBR services will fail to bind to it, preventing the backup software from starting or functioning correctly. Veeam Community Resource Hub Why Port 443 is Required API & Web Interface
Run port scans prior to installing enterprise software to safely map out network real estate. Change the Startup type to Manual or Disabled
netsh http delete urlacl url=https://+:443/
If you have both and Veeam Enterprise Manager on the same machine (not typical for performance reasons):
If another service binds to this port first, Veeam cannot start its mandatory transport and management web services, halting your backup infrastructure. Step 1: Identify the Conflicting Application
Before you can proceed, you need to know which service is "squatting" on port 443.
If the conflict is insurmountable and you are using Veeam v13, some administrators have resorted to more drastic measures.
Common culprits include IIS, SQL Reporting Services, or Hyper-V Replication . 2. Common Fixes for Specific Services